42420654561 has 8 divisors (see below), whose sum is σ = 57335679520. Its totient is φ = 27893032992.

The previous prime is 42420654559. The next prime is 42420654583. The reversal of 42420654561 is 16545602424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42420654561 - 2¹ = 42420654559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42420654511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96850591 + ... + 96851028.

It is an arithmetic number, because the mean of its divisors is an integer number (7166959940).

Almost surely, 2^42420654561 is an apocalyptic number.

It is an amenable number.

42420654561 is a deficient number, since it is larger than the sum of its proper divisors (14915024959).

42420654561 is a wasteful number, since it uses less digits than its factorization.

42420654561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193701695.

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 42420654561 in words is "forty-two billion, four hundred twenty million, six hundred fifty-four thousand, five hundred sixty-one".